* Astronomy

Nature has provided five huge rest stops far out in space for the convenience of spacecraft travelling from Earth.
Some NASA folks call them "parking lots" in space.
They're unusual locations where gravity loses its pull and a spaceship can loiter, rather like a marble at the bottom of a cup, without using a lot of fuel. Three of them are 930,000 miles outside Earth's orbit. One is between the Earth and the sun, and another is hidden on the far side of the sun.

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